- Removed redundant workspace_path='/workspace' from 7 sandbox tool files
* sb_files_tool.py
* sb_shell_tool.py
* sb_deploy_tool.py
* sb_templates_tool.py
* sb_upload_file_tool.py
* sb_presentation_tool.py
* sb_web_dev_tool.py
- Base class SandboxToolsBase already sets this on line 23
- Eliminates 7 lines of duplicate code
- All tools now inherit workspace_path from base
- Converted sb_upload_file_tool.py to use centralized db_helpers
* Removed DBConnection import
* Uses get_initialized_db() instead